Perth Basin South, WA, 2011 (P1243), radiometric line data, AWAGS levelled

The radiometric, or gamma-ray spectrometric method, measures the natural variations in the gamma-rays detected near the Earth's surface as the result of the natural radioactive decay of potassium (K), uranium (U) and thorium (Th). The data collected are processed via standard methods to ensure the response recorded is that due only to the rocks in the ground. The results produce datasets that can be interpreted to reveal the geological structure of the sub-surface. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose. This Perth Basin South, WA, 2011 (P1243), radiometric line data, AWAGS levelled were acquired in 2011 by the WA Government, and consisted of 80718 line-kilometres of data at 400m line spacing and 60m terrain clearance. To constrain long wavelengths in the data, an independent data set, the Australia-wide Airborne Geophysical Survey (AWAGS) airborne magnetic data, was used to control the base levels of the survey data. This survey data is essentially levelled to AWAGS.

放射性（伽马能谱）测量法通过探测地表附近的伽马射线自然波动，反映钾（K）、铀（U）与钍（Th）的自然放射性衰变所产生的辐射信号。所采集的数据将通过标准化流程处理，确保记录的响应仅源自地下岩层的辐射。经处理得到的数据集可通过解译，揭示地下地质构造特征。
经处理的数据将由GA地球物理学家开展质量核查，以确保GA发布的最终数据符合使用需求。
本次2011年西澳州南部珀斯盆地（Perth Basin South, WA, 2011，编号P1243）的放射性测线数据（已按AWAGS标准校正）由西澳州政府于2011年采集完成，总测线长度达80718千米，测线间距为400米，飞行离地高度为60米。
为抑制数据中的长波长漂移，本次研究采用独立数据集——全澳航空地球物理调查（Australia-wide Airborne Geophysical Survey, AWAGS）航空磁测数据，对本测区数据的基准电平进行校正管控。
本次测区数据实质上已按AWAGS标准完成电平校正。